CVE-2026-19884

Command execution via untrusted Git configuration

Published Aug 14, 2026 · Updated Aug 14, 2026

Command execution in Eclipse Theia 1.69.0 and earlier allows attackers to run code when a user opens a crafted Git repository. The Git integrations run commands before workspace trust, causing Git to honor repository-local core.fsmonitor and execute its configured command. A user must clone and open the repository; execution then occurs with that user's privileges without a confirmation prompt.

CVSS severity8.4
High
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command execution in Eclipse Theia 1.69.0 and earlier allows attackers to run code when a user opens a crafted Git repository. The Git integrations run commands before workspace trust, causing Git to honor repository-local core.fsmonitor and execute its configured command. A user must clone and open the repository; execution then occurs with that user's privileges without a confirmation prompt.

The record

CVE
CVE-2026-19884
Published
Aug 14, 2026
Updated
Aug 14, 2026
Vendor
The Eclipse Foundation
Product
Eclipse Theia
Classifications
CWE-829, CWE-15, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <1.70.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

The Eclipse Foundation · Eclipse Theiaversion=0 <1.70.0

Published CVSS scores

8.4Eclipse FoundationCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-829Inclusion of Functionality from Untrusted Control Sphere
CWE-15External Control of System or Configuration Setting
T1204.002Malicious File

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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